Media JS: Use basic upload/library by default.

`wp.media` now recognizes the `frame` attribute (currently a string; either'select' or 'post') and defaults to using a basic select frame. It also checks for the existence of classes in a safer fashion, as it does not assume the `MediaFrame` property exists.

see #21390.


git-svn-id: http://core.svn.wordpress.org/trunk@22495 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/media-upload.js

@@ -103,6 +103,7 @@ var tb_position;
 				return workflow;
 
 			workflow = workflows[ id ] = wp.media( _.defaults( options || {}, {
+				frame:    'post',
 				title:    wp.media.view.l10n.insertMedia,
 				multiple: true
 			} ) );

wp-includes/js/mce-view.js

@@ -694,6 +694,7 @@ window.wp = window.wp || {};
 					return;
 
 				this.frame = wp.media({
+					frame:     'post',
 					state:     'gallery-edit',
 					title:     mceview.l10n.editGallery,
 					editing:   true,

wp-includes/js/media-models.js

@@ -7,15 +7,30 @@ window.wp = window.wp || {};
 	 * wp.media( attributes )
 	 *
 	 * Handles the default media experience. Automatically creates
-	 * and opens a media workflow, and returns the result.
+	 * and opens a media frame, and returns the result.
 	 * Does nothing if the controllers do not exist.
 	 *
 	 * @param  {object} attributes The properties passed to the main media controller.
 	 * @return {object}            A media workflow.
 	 */
 	media = wp.media = function( attributes ) {
-		if ( media.view.MediaFrame.Post )
-			return new media.view.MediaFrame.Post( attributes ).render().attach().open();
+		var MediaFrame = media.view.MediaFrame,
+			frame;
+
+		if ( ! MediaFrame )
+			return;
+
+		attributes = _.defaults( attributes || {}, {
+			frame: 'select'
+		});
+
+		if ( 'select' === attributes.frame && MediaFrame.Select )
+			frame = new MediaFrame.Select( attributes );
+		else if ( 'post' === attributes.frame && MediaFrame.Post )
+			frame = new MediaFrame.Post( attributes );
+
+		delete attributes.frame;
+		return frame.render().attach().open();
 	};
 
 	_.extend( media, { model: {}, view: {}, controller: {} });